The big money is not in the buying and selling … but in the waiting.
I like dogs. You always know what a dog is thinking. It has four moods. Happy, sad, cross and concentrating. Also, dogs are faithful and they do not tell lies because they cannot talk.
Labor economics is fundamentally about understanding people’s choices and constraints.
儿童有一种特殊的敏感性,促使他认识周围的一切。
哲学家们只是用不同的方式解释世界,而问题在于改变世界。